NEC UNIVERGE SV9100 Features And Specifications page 1157

License information in the Primary will be copied to the Secondary site when doing
database duplication.
Duplicate license information in the Secondary System is available for only 28 days.
After twenty-eight days, the license expires. To renew the license, a connection to the
original Primary site must be re-established. (Once the connection to the Primary is
recovered, if fail-over occurs again, the license is once again enabled for twenty-eight days
to the new Primary System).
If the original Primary site is in the NetLink network as a temporary secondary, the license
information is available.
If a user wants to enter another additional feature license, it needs to be entered on the
original Primary System.
When fail-over occurs, the Primary System is changed to another communication server.
The IP applications do not know the new primary IP Address, so the following features are
disabled after fail-over:
SMDR
-MIS
SIP Terminal
Softphone
IP K-CCIS
The following Programs are not updated by the Primary System during fail-over:
Program 10-01, Program 10-02, Program 10-12, Program 10-13, Program 10-14, Program
10-15, Program 10-16, Program 51-01, Program 90-01 or Program 90-09.
Data in SRAM area is not transferred to the Secondary Systems during fail-over, therefore
when fail-over occurs DND and Caller ID History may be lost.
When a Secondary System with an ETIA or RTB assigned is added to a NetLink network,
the Primary Systems database does not replicate the data in Programs 10-55 or 90-61.
Both the Primary Site and Secondary Sites can have their own local MOH source
connected to the CN8 or CN9 on the front of the GCD-CP10.
The T-1 CCTA and PVA-CCIS blade is supported in the primary system and/or secondary
systems.
When using Mobile Extension in a NetLink Network, the ISDN/PRI must be used in the
Primary System.
When using Set Relocation, and a terminal is re-located from one physical system to
another physical system, route programming must be made accordingly for 911 calls.
FoIP (Fax over IP) is supported in a NetLink Network.
DT700 series IP terminals and wireless IP terminals can be registered to secondary
systems in a NetLink environment, Softphones must still register to the primary only.
For a network to be suitable for VoIP it must pass specific requirements. To ensure the site
meets these requirements, an IP ready check and a site survey must be completed at each
site before VoIP implementation.
One-way delay must not exceed 100ms
Round Trip delay must not exceed 200ms
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